Pers Investment Keeps Calling and Tricked Me Into Losing My Savings

I have been receiving persistent calls from Pers Investment for three months. Despite blocking them, they keep calling from different numbers, promising profits with small investments. However, when you send a large amount, they claim your money was placed in the wrong transaction and stopped, then they demand more money to cover the loss. They do not answer your calls, so let them call as much as they want. My hard-earned savings have gone to waste.